| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef NET_NQE_EVENT_CREATOR_H_ |
| #define NET_NQE_EVENT_CREATOR_H_ |
| |
| #include <stdint.h> |
| |
| #include "base/macros.h" |
| #include "base/sequence_checker.h" |
| #include "base/time/time.h" |
| #include "net/base/net_export.h" |
| #include "net/log/net_log_with_source.h" |
| #include "net/nqe/effective_connection_type.h" |
| #include "net/nqe/network_quality.h" |
| |
| namespace net { |
| |
| class NetLogWithSource; |
| |
| namespace nqe { |
| |
| namespace internal { |
| |
| // Class that adds net log events for network quality estimator. |
| class NET_EXPORT_PRIVATE EventCreator { |
| public: |
| explicit EventCreator(NetLogWithSource net_log); |
| ~EventCreator(); |
| |
| // May add network quality changed event to the net-internals log if there |
| // is a change in the effective connection type, or if there is a meaningful |
| // change in the values of HTTP RTT, transport RTT or bandwidth. |
| // |effective_connection_type| is the current effective connection type. |
| // |network_quality| is the current network quality. |
| void MaybeAddNetworkQualityChangedEventToNetLog( |
| EffectiveConnectionType effective_connection_type, |
| const NetworkQuality& network_quality); |
| |
| private: |
| NetLogWithSource net_log_; |
| |
| // The effective connection type when the net log event was last added. |
| EffectiveConnectionType past_effective_connection_type_; |
| |
| // The network quality when the net log event was last added. |
| NetworkQuality past_network_quality_; |
| |
| SEQUENCE_CHECKER(sequence_checker_); |
| |
| DISALLOW_COPY_AND_ASSIGN(EventCreator); |
| }; |
| |
| } // namespace internal |
| |
| } // namespace nqe |
| |
| } // namespace net |
| |
| #endif // NET_NQE_EVENT_CREATOR_H_ |